When Applying Manual Resistance to the Upper Extremity Using the D₁

When applying manual resistance to the upper extremity using the D₁ extension pattern (PNF) ,the muscle groups being facilitated (strengthened) are the shoulder extensors and the:

A) Adductors,internal rotators,and wrist and finger flexors.
B) Abductors,external rotators,and wrist and finger extensors.
C) Adductors,external rotators,and wrist and finger flexors.
D) Abductors,internal rotators,and wrist and finger extensors.